Answer and Explanation:
The preparation of incremental analysis for the Klean Fiber is shown below:-
                Reject order     Accept order  Net Increase/
                                           Decrease
Revenue
($4.55 × 249,800)                 $1,136,590    $1,136,590
Less:
Variable costs
Direct material                   $509,592     $509,592
($2.04 × 249,800)  Â
Direct labor                      $132,394      $132,394        Â
($0.53 × 249,800)
Variable overhead                $247,302       $247,302
($0.99  × 249,800)
Total variable cost               $889,288       $889,288
Net income                     $247,302       $247,302
Therefore by accepting the order the net income increases by  $247,302 which means the net income is increasing by accepting the order.
Working note
Selling price = Direct material + Direct labor + Variable overhead + Additional amount
= $2.04 + $0.53 + $0.99 + $0.99
= $4.55